//
// Created by Administrator on 2022/1/10.
//

#include <stdio.h>

int main() {
    int a = 0;
    int b = 0;
    scanf("%d", &a);
    int *p = &a;
    printf("%p\n", p);
    printf("a:%d\n", a);
    *p = 1;
    printf("a:%d\n", a);
    p = &b;
    printf("a:%d\n", a);
    return 0;
}